I'm sorry if I've posted similar elsewhere and can't get the answer through my head, but.....
You've got:
- Magic Duel
 
- Mind Hunt
 
- Mind Burn (from MH)
 
- Soul Slay (from MH)
 
-  Others...
 
Of these, is it 
only Magic Duel which ignores all boosters, spells etc. and compares native Astral levels alone (for the fight part)?  (I believe the Mind-Hunt-cord-detection roll might also ignore boosters?)  I seem to get stuck on this...
Also, do things like Luck or Anti-Magic help?  Is it that they have no effect in Magic Duel, but do affect the other stuff?
It would be nice to have a really concise, definite answer!